Display screen or portion thereof with an animated graphical user interface



FIG. 1 is a front view of a display screen or portion thereof with afirst image in a sequence for an animated graphical user interface inaccordance with a first embodiment;

FIG. 2 is a front view of a display screen or portion thereof with asecond image in a sequence for an animated graphical user interface inaccordance with the first embodiment;

FIG. 3 is a front view of a display screen or portion thereof with afirst image in a sequence for an animated graphical user interface inaccordance with a second embodiment; and,

FIG. 4 is a front view of a display screen or portion thereof with asecond image in a sequence for an animated graphical user interface inaccordance with the second embodiment.

The outermost broken lines illustrate a display screen or portionthereof and form no part of the claimed design. The remaining brokenlines, illustrating portions of the animated graphical user interface,form no part of the claimed design. The process or period in which oneimage transitions to another forms no part of the claimed design. Theappearance of the image transitions sequentially between the imagesshown in FIGS. 1 and 2, and FIGS. 3 and 4, respectively.

CLAIM The ornamental design for a display screen or portion thereof withan animated graphical user interface, as shown and described.